Electrically Tunable Square-zone Fresnel Lens Made of Polymer-separated Composite Film
An electrically tunable square-zone Fresnel lens was fabricated using the polymer-separated composite film method. With the prepolymer and liquid crystal ratio of 1: 1, good performance was obtained with a UV exposure intensity of 2 mW/cm2 and an exposure time of 10 rain at 100℃. The Fresnel zone lens has an original focal length of about 20 cm. After applying a voltage, the focusing effect disappeared due to the refractive indices match between the liquid crystal and polymer.
Fresnel Lens PSCOF
Y. J. Liu X. W. Sun
School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798
国际会议
上海
英文
724-728
2007-03-12（万方平台首次上网日期，不代表论文的发表时间）